“This study offers a significant contribution to the research literature on the relationship between social environment and health, and specifically to our understanding of how giving assistance to others may offer health benefits to the giver by buffering the negative effects of stress,” says principal investigator Michael J. Poulin, assistant professor of psychology at the University at Buffalo.

The article, published in the American Journal of Public Health, points out that although it is established that social isolation and stress are significant predictors of mortality and morbidity, 20 years of studies and meta-analytical review have failed to establish that receiving social support from others buffers recipients against mortality after exposure to psychosocial stress.

“We tested the hypothesis that providing help to others would predict a reduced association between stress and mortality for the helpers. Specifically, over the five years of the study, we found that when dealing with stressful situations, those who had helped others during the previous year were less likely to die than those who had not helped others,” Poulin says.

The study’s 846 subjects, all from the Detroit area of Michigan, completed baseline interviews that assessed stressful events they had experienced in the previous year and whether they had provided tangible assistance to friends or family members in the past year.

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Self-reported stressful experiences included such things as serious, non-life-threatening illness, burglary, job loss, financial difficulties, or death of a family member.

Respondents also reported the total amount of time in the past 12 months they had spent helping friends, neighbors, or relatives who did not live with them by providing transportation, doing errands and shopping, performing housework, providing child care, and other tasks.